Programming
How to show Week Numbers in JavaScript
A quick guide to finding or calculating the current ISO week number within JavaScript.
code snippet
// Calculate ISO Week
const d = new Date();
d.setHours(0,0,0,0);
d.setDate(d.getDate() + 4 - (d.getDay()||7));
const yearStart = new Date(d.getFullYear(),0,1);
const weekNo = Math.ceil((((d - yearStart) / 86400000) + 1)/7);
console.log(weekNo);